Who owns the K SIGMA trademark?

The K SIGMA trademark is owned by Knorr-Bremse AG.

What is the serial number for K SIGMA?

The USPTO serial number for K SIGMA is 79366946.

What is the registration number for K SIGMA?

K SIGMA is registered under USPTO registration number 7369804.

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Home Search: K SIGMAK SIGMA #79366946

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Updated Oct 7, 2026·31 searches this week

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KSI

USPTO Trademark Record

REGISTERED

K SIGMA

Q: What class is the K SIGMA trademark registered in?

The K SIGMA trademark is registered in Class 037 (Construction, installation & repair services), Class 040 (Treatment & processing of materials).

SN 79366946·Reg 7369804·Filed Feb 10, 2023

Owner Knorr-Bremse AG

Construction services; installation and repair services; mining extraction, oil and gas drilling.; Treatment of materials; recycling of waste and trash; air purification and treatment of water; printing services; food and drink preservation.

K SIGMA (Serial No. 79366946), Registration No. 7369804, is a registered US trademark filed on Feb 10, 2023 by Knorr-Bremse AG. This trademark covers Class 037 (Construction, installation & repair services), Class 040 (Treatment & processing of materials).

early section 8: April 30, 2030

Mark Intelligence

K SIGMA (Reg. #7369804) is a registered US trademark that has been protecting its owner, Knorr-Bremse AG, since 2023. The mark covers Class 037 (Construction, installation & repair services) and Class 040 (Treatment & processing of materials) respectively. Goods and services include Construction services; installation and repair services; mining extraction, oil and gas drilling.; Treatment of material.... The mark faced 3 opposition proceedings during prosecution.

FILED

Feb 10, 2023

SERIAL

79366946

REG#

7369804

REGISTERED

Apr 30, 2024

Filing Information

StatusREGISTERED

Filing DateFeb 10, 2023

Serial Number79366946

Registration No.7369804

Registration DateApr 30, 2024

Status DateApr 30, 2024

Published for OppositionFeb 13, 2024

Full Goods & Services

CLASSES

OFFICE

USPTO

COUNTRY

Class 037Construction, installation & repair services

US codes: 100, 103, 106

Construction services; installation and repair services; mining extraction, oil and gas drilling.

Class 040Treatment & processing of materials

US codes: 100, 103, 106

Treatment of materials; recycling of waste and trash; air purification and treatment of water; printing services; food and drink preservation.

This description is as filed with the USPTO and defines the scope of trademark protection.

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Status History

25 events

FINAL DECISION TRANSACTION PROCESSED BY IB

Nov 17, 2024

FINAL DECISION TRANSACTION PROCESSED BY IB

FINAL DISPOSITION PROCESSED

Oct 29, 2024

FINAL DISPOSITION PROCESSED

FINAL DISPOSITION NOTICE SENT TO IB

Oct 29, 2024

FINAL DISPOSITION NOTICE SENT TO IB

FINAL DISPOSITION NOTICE CREATED, TO BE SENT TO IB

Jul 30, 2024

FINAL DISPOSITION NOTICE CREATED, TO BE SENT TO IB

REGISTERED-PRINCIPAL REGISTER

Apr 30, 2024

REGISTERED-PRINCIPAL REGISTER

NOTICE OF REGISTRATION CONFIRMATION EMAILED

Apr 30, 2024

NOTICE OF REGISTRATION CONFIRMATION EMAILED

NOTIFICATION PROCESSED BY IB

Feb 14, 2024

NOTIFICATION PROCESSED BY IB

PUBLISHED FOR OPPOSITION

Feb 13, 2024

PUBLISHED FOR OPPOSITION

OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED

Feb 13, 2024

OFFICIAL GAZETTE PUBLICATION CONFIRMATION E-MAILED

NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED

Jan 24, 2024

NOTIFICATION OF NOTICE OF PUBLICATION E-MAILED

NOTICE OF START OF OPPOSITION PERIOD CREATED, TO BE SENT TO IB

Jan 24, 2024

NOTICE OF START OF OPPOSITION PERIOD CREATED, TO BE SENT TO IB

NOTIFICATION OF POSSIBLE OPPOSITION SENT TO IB

Jan 24, 2024

NOTIFICATION OF POSSIBLE OPPOSITION SENT TO IB

APPROVED FOR PUB - PRINCIPAL REGISTER

Jan 05, 2024

APPROVED FOR PUB - PRINCIPAL REGISTER

TEAS RESPONSE TO OFFICE ACTION RECEIVED

Jan 03, 2024

TEAS RESPONSE TO OFFICE ACTION RECEIVED

CORRESPONDENCE RECEIVED IN LAW OFFICE

Jan 03, 2024

CORRESPONDENCE RECEIVED IN LAW OFFICE

TEAS/EMAIL CORRESPONDENCE ENTERED

Jan 03, 2024

TEAS/EMAIL CORRESPONDENCE ENTERED

REFUSAL PROCESSED BY IB

Oct 11, 2023

REFUSAL PROCESSED BY IB

REFUSAL PROCESSED BY MPU

Sep 20, 2023

REFUSAL PROCESSED BY MPU

NON-FINAL ACTION MAILED - REFUSAL SENT TO IB

Sep 20, 2023

NON-FINAL ACTION MAILED - REFUSAL SENT TO IB

NON-FINAL ACTION (IB REFUSAL) PREPARED FOR REVIEW

Aug 31, 2023

NON-FINAL ACTION (IB REFUSAL) PREPARED FOR REVIEW

NON-FINAL ACTION WRITTEN

Aug 30, 2023

NON-FINAL ACTION WRITTEN

ASSIGNED TO EXAMINER

Aug 28, 2023

ASSIGNED TO EXAMINER

APPLICATION FILING RECEIPT MAILED

Apr 14, 2023

APPLICATION FILING RECEIPT MAILED

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

Apr 10, 2023

NEW APPLICATION OFFICE SUPPLIED DATA ENTERED

SN ASSIGNED FOR SECT 66A APPL FROM IB

Apr 07, 2023

SN ASSIGNED FOR SECT 66A APPL FROM IB

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